Anne Marie Emery's blog

HFF investigates lower river flow disruption

As some of you have heard, flow in the Henry’s Fork at St. Anthony dropped suddenly at around 4 p.m. on Thursday, October 23rd.  Flow dropped from 1050 cfs to 622 cfs over a one-hour-period and then increased to 1080 cfs over the next 45 minutes.  The river bottom was briefly exposed in shallow areas along the banks and in side channels.  We received a report that some small fish were stranded and that brown trout redds were exposed.  The event was short enough that gravel in the redds most likely remained saturated.

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